Machine for molding plastic material.



E. T. PARSONS & W. J. ONEIL.

MACHINE 'FOR MOLDING PLASTIC MATERIAL. APPLICATION FILED JULY 17, 1906.

Patented Mar. 29, 1910 6 SHEETB-8HEET 1.

Inventors; ETParsons E. T. PARSONS & W. J. ONEIL. MAGHINE FOR MOLDINGPLASTIO MATERIAL.

APPLICATION FILED JULY17. 1906.

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E. T. PARSONS &W. J. ONEIL. MACHINE FOR MOLDING PLASTIC MATERIAL.

APPLICATION FILED JULY 17, 1906.

Patented Mar. 29, 1910.

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MACHINE FOR MOLDING PLASTIC MATERIAL. APPLIOATIOILIILED JULY 17, 1906.

953,177. Patented M31229, 1910.

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Ws'iaesiai' flfParsoms E. T. PARSONSci'z W. J. ONEIL.

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Mama M5 E: T. PARSONS & W, J. ONEIL.

MACHINE FOR MOLDING PLASTIC MATERIAL.

APPLIGATION FILED JULY 17,1906

Patented Mar. 29, 1910.

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rsrnn'r OFFICE.

EDWARD T. PABSQNS )RND WILLIAM J. WHEEL, OF NEVIARK, NEW JERSEY, ASSIGNORS TO C. A. Z'EHC I/LTESON MACE" POEATEION HEY? JEIQ.

MACHINE FOP.- MOLDIENG PLASIIIC MATERIAL.

Einecification of Letters Patent.

Patented Mar. 29,. 1910.

Application filed July 17, 1906. Serial No. 328,588. I

To all 717720791 it may concern:

Be it known that we, EDWARD T. Pnnsons and 1111.1;02' J. Oh nijc, citizens of the United States, residing as Newark, in the county of Essex and State of l ew Jersey, have jointly inv .lcd certain new and use ful IIIIPIOYQIlii-llifi in Machines for Molding Plastic iii/tutorial, of which the following is z specification.

This invention relates to machines for molding plastic nuterial, rind more particulz-n'ly to apparatus for il'irming dough into the form of lomes or hatches ready for the oven.

A further object of the invention the provision of means for molding dough into loaves of varying diameter and of any required size, so that. what are known to the trade as Vienna loaves may he readily made by matl hinery. A

A "urther object of the invention is the provision of improved means for forming a baton or lump of dough into a flat sheet, and in connection'therewith of curling and conveying devices for starting said sheet into the form of'av coil or spiral.

A further ohj'ect of the invention is the provision of a molding-plate or concave of peculiar form, said plate cooperating with a drum, roller or other device by which the coil is rolled. or knead-ed into loaf-form.

Other objects of the invention will be hereinafter set foth.

In the accompanying drawings, Figure 1 is a side elevation of the preferred form of our invention, or as it is used, for making taperedrolls or Vienna loaves. Fig. 2 is a side elevation of the side of the machine reverse to that hf Fig. 1. Fig. 8 e longitudinal vertical section taken on line u --of Fig. 4. Fig 41 is a front elevation. Fig.

5 lie. detail View showing in plan a clutch ployed. Figs. 6 and 7 are end views of a of clutch-inemhr s. Is it plan 9isfa longltudinal vertical section taken on line 9-4) of Fi 8. 10 to 13 inclusive are sections ta (en, res ectively, on lines .0, d, e and f of Fig. 9. ,l. ig. 1 1 is a View of a tapered or Vienna roll, as formed. by the ma chine in its preferred an end View of the coil of dough utilized in both forms of the invention. Fig. 16 is a View of a. straight cylindrical roll or loaf; Fig. 17 sectional view corresponding to Fig. 3 but having a plate or concave for producing the roll shown in Fi 16; and Figs. 18 and 19 are diagrams hereinafter described.

Like numerals designate similar parts throughout the several views.

Referring to the drawings, the numeral 1 designates the frame of the machine, shown composed of sides 2 united by tie-rods 3, although it may be of other suitable construction. Journaled in the top of the frame is a driving-shaft 4, and on said shaft is loosely mounted a belt-pulley 5, having a huh-'6 provided with a clutch-face 7, While rigidwvith the shaft is a complemental clutch-surface 8 chambered at 9 to receive 'a coiled-spring 10 surrounding the shaft 4:. Sleeved upon the shaft 4 adjacent to the inner side of pulley 5 is the hub 12 of a lever 13, said hub having on its inner side a pair of diamctridilly-opposite teeth 14-.

Rigid with the si(l e-fran'ies 2 are boxes 15, 15 in which the shaft at is journaled, and in the end of the journal-box 15' are formed notches 16 for the reception of the teeth 14, (see Figs. 5, 6 and 7).

From what has been stated it will be evident that when the lever 13 is manipulated the teeth 14 on the hub. thereof will ride out of the notches in the end of the hearing 15', shift the thing-action longitudin cause said pulley to be clutched to said gulley 5 by a cama shaft, and that when the teeth 14' are forced within said notches 16 by the spring 10 the pulley will idly rotate. Any other clutch construction may, however, be substituted for that shown without departure from the invention. 1

Rigid with the shaft 4 are gears 17 and i ly of the shaft, and

'pcriphcrv ol: the drum to reduce the. in:

a a roll cooperating with ih t nha l't l i of dough to sheet-form, aa illicslratcd in Fig. 3. A sti.'ippcr1.)late Flt secured to an arm 27 projecting from a rock-shaft: iournaled in bcarinsrs ot the lrame. said rtri aver-plate servin to clear the roll trom adhering material in the usual manner. it screw 53!) passes through an arm of the roch-J hatt 28. bears a 'ainst the top ot one l of the side-frames and serves to adjust. the roclcshatt; and .stri nicr ate.

.ldigid with toe iatt .13 a toothed or siiarrated roll Ill, rotating in the direction of the arrow shown in Figs. it and -l. and Seri ing to engage the sheet 39, of plastic-materia, and to carry it upward until its end engag' a. 'ur ed resilient curler-plate 323 bolted or otherw so cured to a concave Ill of peculiar construction,"said concave hav ing cars It nlec'i'ed upon a rennn'ahle rod H3.

prov led with a knob 37, and connecting the "nt frames of the machine. It handecrew is -ii'eled at its inne en( in a block ZS?) secured to the concave and in threaded engagenient with the lower rocking-crowrod said screw crying to adjust the concave toward and om the working periphcry of the drain 3 no that the Space bet ween said drum and said concave may be rcc' r lated to suit the diameter of roll or loal' to be made. Shafts 10 and -l-l are journaled in the frame, the former carrying a gear 1'2 in mesh with the large g *ar 1%) ol. the drum, and both shafts having rollers all; and ll, respectively over which passes an endless conveyer-bolt 45.

Coming new to the main feature of the i invention 'i: 1. the means lor forming the dough into a tapered or Vic1ma" shaped loaf, attention is particularly dirccttal to Figs. 5) to li inclusive, to the fact that the curling-devices have brought the sheet of dough intio'the coiled or incipient loaf-torm -lt3 illustrated in l ig. l5; and to the further fact; that said coil of dough is to be rolled or kneaded between the open-sided concave or former-plate EE-l and. the periphery 20 ot the drum 20 into the urtectod shape indicated by the numeral. 457 in Raid Fig. ll.

It will, of course be understood that. the concave or former-plate Si 15 to be ad usted by screw 38 or otherwise to suit. the diameter ol the product to be produced and that the machine may be made of any size, or as it stands be capable of such adjustment that any required diameter of roll or loaf may be made. Gradually to bring the coil 26 into the shape required the concave depression of the toriner-plate 34 which is flangeless at the edges to permit free elongation ol? the coi progressively increases in thickne'as or taper at the edges from its upper to its lower end, this formation being clearly would result.

periphery of the drum illuctrated in the varioua sectional viewr. For imtiun-c. wh re the roll it? is lirst recciicd ii-tween thc former-plate and drum the rtional view Fig. it). taken on line c ol' Fig. 9 will show the sthallownt-r v ot' the concave at this point, and the sections taken on lines (7, 1- and f of said Fig. 5.) illustrate how the de n'ca ion gradually Varies in taper until the tull curve at f is reached which continues to the lower end of the plate. ln other words said tormenplate 3%].- is of progresairely-decreasing radius transverrely thereof. the greatest radius being at or near the entering end of said plate and said radian decreasing toward the discharge .cnd of'said plate. I

In forming a roll of tapered form, which must, of course. vary in diameter throughout its length. different surface-speeds of the article hcine' molded by the drum and 't'ormcnplate must be talreninto consideration, and the drunh being of large diameter also ha a surface speed which constitutes an element of the problem encountered in the production ol perfect work. Due to those onditions it is obvious that the molding ot the loat to taper-form must be gradual. and hence the arc of the concave must pro lsirely vary until the full curve illustrated by Fig. 13 is reached.- Furthermore thia former-plate must; be of the pre. rise length required to produce perfect; work, for it such length should be exceeded, a 'luiither molding actioinwill twist or spiralizc'theends of the roll or loaf, thus impairing its ai ncarance and a-ttecting its salable qualities. in the present instance. and re- 1l'cr,rin; to the diagram Fl l8 and 19, the roll ol dough is shown passing over the tormerilatc and in lll'fi tfih ol a reducingaction by wild plate and drum. From these (*5 it; will be seen that; for example, the

thicker intermediate parts of the body of largest diameter of the loaf, therefore, a

slippage gradually increasing toward the tapered extremities of said loaf must take place, and it this action were long cont'nnied the objectionable twisting before mentioned In the present machine the former-plate is of a length conforming to about one-fourth ofthe circumference of the and although this proportion as regards the circumference of the drum may be varied within certain limits, the length of the plate should not; much exceed the proportions given, for if it does it is found by practical experience that the ends of the roll will be twisted or spiralized as above stated, this action being due beyond the point mentioned to the rapid axial rotation of said roll of dough.

ln 1.? the curling and sheet-forming devices are the same as indicated in the former figures but a concave forming plate 48 extending over about half the circumference of the roll is provided, said plate being adjustable by a screw 49, and merging into a' delivery chute 50. In this form of the invention the coil 46 of dough is rolled into a cylindrical loaf 51, as shown in Fig. 16,

and the generic features of the invention with relation to said modification have relation only to the sheet-forming and curling devices.

ln practice, the periphery of the drum is usually covered with cloth or other textile- Inaterial (not shown) and a scraper-plate 52 for removing any adhering material from the drum is employed in both forms of the machine as shown in 1 2, 3 and '17. Q

in the operation of the invention a batch of dough first placed in the hopper 24: and drops by gravity therefrom upon the periphery or the drum, and said drum rotating in the direction o the arrow, andin conjunction with. the roll 25 reduces the mass to sheetstorm, adherence of material tothe roll 25 being prevented by the stripper-plate 26. As the sheetadyances with the drum if encounters the ratchet or toothed roller 31, is by it deflected in its course, and is carried by the teeth of said roller (the latter rotating in the direction of the drmgn) upward until the end of the sheet engages the yielding curls/r plete 38 when the endis bent rearward to the rig 'ht and the coil is started, the eurler-'plate yielding, as shown in Fig, 8, said coil is formed and finally the complete coil 46 illustrated in F ig.- 15

drops trom the space between the curlerplate and m into the chamber open at its ends produced by the former plate and said drum, when the rolling or kneading operation. commences, and that finally a symmetrical roll with true tapered ends is the re-- sult as illustrated in 14.

it will be observed by referring to Fig. 4 of the drawings that the plate 34 is of less width than the width of the periphery of the drum and that, therefore, an openende'd space permitting tree elongation of the roll of plastic-imiterial is thus pgov ided.

in the modification illustrated iniFig. 17 the sh wt-loritiing and curling-devices are the same as in the preferred form of the invcntiom and the cylindrical roll illustrated in al is the result. Qhanges may be made inthe various elements the machine. the invention not being lin'iited to the precise devices illustrated ,to produce tapered rolls,

and described, nor is it limited to the drum specified as coacting with the former-plate for other devices may be substituted for said drum without departure from the invention.

Having thus described the invention what we claim is:

1. The combination of a reducing roller and drum cooperative to reduce a mass of plastic material to sheet form a roll rotative in the same direction as the drum, a curlerplate for curling the sheet into coil form, said roll serving to present the sheet to the curler plate, and a former plate coiiperative with and 'spaced apart from the drum, said two last mentioned parts serving to reduce so the coil to finished form.

2. The combination of a reducing roller and a drum cotiperative to reduce plastic material to sheet form, a toothed roll rotary in the same direction as the drum, a curlerplate said toothed roll serving to positively present the sheet to said curler'plate and the latter being adapted to curl or coil the sheet, and a former-platespaced from and cotiperative with said drum, the space between said former plate and drum being adapted to receive the curled or coiled body ot'plastic ma-. terial and the former plate and drum serving together to make said curled or coiled body into finished form.

reducing roller cooperative with said drum to reduce a mass of plastic material to sheet form, a yieldable curlerrplate, a roller to receive said sheet and to present the same to said curler-plate, and a former'plate coopera-tive with and partially surrounding said drum. A

4. The combination with the drum; a reducing roll that cooperates with the drum and means independent of the drum for curling the material. I

5; The combination with a reducing roll and a drum that cotiprates therewith, of

means for forming the mass into a coil,-the

said means operating independently of the drum, and another means for reducing the coiled mass.

6. In combinationwith a shapin drum, a

reducing roll that cooperates with re reoeiving portion of the drum, a combined compressing and'shaping member that cotiper- Y :ates'with the discharge end of the drum,

means for curling the material independent of the drum after it leaves the reducing roll, 1 20 and before it enters the combined compressing and shaping member and reducing it to a coil..

7. In combination with a rotatable shaping drum, compressingand shaping member that eooperates with-the shaping drum, of an inter posed mechanism operable independentof .95 8. The combination of a rotary drum, a

a reducingroll and a combined the a'l'm'esaio mechanisms tor receiving the l guard plate that cooperates with the roller 1 to form a coiling passage. 11. Thecomhination with a drum, a roller material from the drum after it passes the reducing" roll and returning the material to l the drnni and to the compressing and shaping; IlIOITlbQl at the entrant end thereof.

in combination with a nieans for reducing the plastic material. to a sheet and i advancing such sheet said means including a shaping drum and shaping a d compressing the plastic body, of means interposed between the reducing nieaus and the finally shaping and compressing means to receive the curl it into coils imlcpcndently of the shapa coacting roll, and means cooperating with the drum for finally plastic body, and

ing drum and then returning the coiled sheet I to the shaping drum to enter the finally shaping and compressing devices.

9. The combination with means for ad- \':11.tlll;:l she t; in; a l.'t)ll )i I cooperates thm'ewith and inc motion site said guard plate being secured at its delivery plate only.

ll). ln combination with means for reducineans :t'or impartoi a curling means compris- 5 a spring nictal guard plate that 1 to the roller in a direction oppo- 1 the direction oi: movement of the sheet I inga plastic body to a sheet, and advancing it; at a curling means comprising a roug'lt cned tat-ed roller rotatable in a direction opposite the movcnurnt oi the sheet and a;

that cooperates therewith, a bottomless hopper mounted on the drum, in advance of the roller, a scraper for engaging the drum in advance of the hopper, a scraper for engaging the roller, and a curling means that 0perates independent of the drunfand engages the plastic sheet as it advances from between the drum and roller.

12. The combination with the drum, and the reducing roller; of a roughened faced roller and a guard plate concentric with the roller, said plate being secured at its discharge end only.

13. The cunhination with means for ad vancing a sheet; of a curling means comprising a roller, a spring metal guard-plate that cooperates therewith and means for imparting motion to the roller in a direction opposite the direction ol movement of the sheet said guard plate being secured at its delivery end out In testimony whereof We affix our signatures in presence of two Witnesses.

' EDWQ'XRD '1. PARSONS.

lVl'LLlAM J. ONEIL.

Witnesses C. A. KIRK.

GEO. E. Gowns: 

